agenttesla | c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21

General

Target

c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
Size

25KB
MD5

439c8eaf5105f874659e06ecca63e66b
SHA1

f264db763cacbcbc6620353097b1cd6367d14afb
SHA256

c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21
SHA512

2cf9bb028b1d8ca1c321f9a809c6e1d0552992eefc2229661579edeaac8ef0d9926ff1e0a26d8962f6672a45be7bc7b2a86b8331a43a922418569b889853ac5a
SSDEEP

96:1Nd/FIveD4XyrmRNb++DvI63LilNRZjHgnmXV/cfDj6hLGkZNiRB4e3T3e4KxJdv:bxFIqmA62lNTDcmXZCehLrZbxJX

Score

10^/10

agenttesla purecrypter collection downloader keylogger loader persistence spyware stealer trojan

Malware Config

Extracted

Family

purecrypter

C2

http://www.ugr.leszczynskie.net/galeria/Xcilfp.png

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nEdIOIr = "C:\\Users\\Admin\\AppData\\Roaming\\nEdIOIr\\nEdIOIr.exe"	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
20	api.ipify.org
21	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1908	powershell.exe
1908	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	1848	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1848	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 1908	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	84
PID 2860 wrote to memory of 1908	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	84
PID 2860 wrote to memory of 1908	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	84
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88
PID 2860 wrote to memory of 1848	2860	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
"C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1908
- C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
  C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe.log

Filesize
1KB

MD5
3a9188331a78f1dbce606db64b841fcb

SHA1
8e2c99b7c477d06591a856a4ea3e1e214719eee8

SHA256
db4137e258a0f6159fda559a5f6dd2704be0582c3f0586f65040c7ad1eb68451

SHA512
d1a994610a045d89d5d306866c24ae56bf16555414b8f63f632552568e67b5586f26d5a17a1f0a55ada376730298e6d856e9161828d4eae9decfa4e015e0e90a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1zvrrs0r.bes.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1848-179-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/1848-172-0x0000000006DB0000-0x0000000006F72000-memory.dmp

Filesize
1.8MB

Download
memory/1848-171-0x0000000006B90000-0x0000000006BE0000-memory.dmp

Filesize
320KB

Download
memory/1848-170-0x0000000006AF0000-0x0000000006AFA000-memory.dmp

Filesize
40KB

Download
memory/1848-167-0x0000000006910000-0x00000000069A2000-memory.dmp

Filesize
584KB

Download
memory/1848-166-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/1848-165-0x00000000056B0000-0x0000000005C54000-memory.dmp

Filesize
5.6MB

Download
memory/1848-162-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1908-139-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-141-0x0000000005540000-0x00000000055A6000-memory.dmp

Filesize
408KB

Download
memory/1908-153-0x00000000079B0000-0x000000000802A000-memory.dmp

Filesize
6.5MB

Download
memory/1908-154-0x0000000006860000-0x000000000687A000-memory.dmp

Filesize
104KB

Download
memory/1908-155-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-156-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-157-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-158-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-142-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/1908-152-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/1908-140-0x0000000005190000-0x00000000051A0000-memory.dmp

Filesize
64KB

Download
memory/1908-137-0x0000000002A10000-0x0000000002A46000-memory.dmp

Filesize
216KB

Download
memory/1908-138-0x00000000057D0000-0x0000000005DF8000-memory.dmp

Filesize
6.2MB

Download
memory/2860-133-0x0000000000B40000-0x0000000000B4C000-memory.dmp

Filesize
48KB

Download
memory/2860-136-0x00000000068E0000-0x0000000006902000-memory.dmp

Filesize
136KB

Download
memory/2860-135-0x0000000005550000-0x0000000005560000-memory.dmp

Filesize
64KB

Download
memory/2860-134-0x0000000005550000-0x0000000005560000-memory.dmp

Filesize
64KB

Download

Analysis

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